Climate and monthly weather forecast
Ione, CA

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Weather in January

January in Ione, California, is a moderate winter month, with an average temperature varying between 56.1°F (13.4°C) and 40.1°F (4.5°C). The average high-temperature during January registers at a refreshing 56.1°F (13.4°C), closely corresponding to the preceding month. Weather in January »

Weather in February

February, the last month of the winter in Ione, is another mild month, with an average temperature varying between 57.9°F (14.4°C) and 39.7°F (4.3°C). Ione's February average high-temperature settles at a still refreshing 57.9°F (14.4°C), showing a near match with the preceding month. Weather in February »

Weather in March

March, the first month of the spring in Ione, is a refreshing month, with an average temperature ranging between min 41.5°F (5.3°C) and max 61.3°F (16.3°C). March's arrival registers an average high-temperature of a still refreshing 61.3°F (16.3°C), closely aligning with the temperature of the previous month. Weather in March »

Weather in April

April, the same as March, is another comfortable spring month in Ione, California, with an average temperature fluctuating between 67.6°F (19.8°C) and 44.6°F (7°C). As Ione transitions into April, the average high-temperature is observed to slightly rise from a refreshing 61.3°F (16.3°C) in March to a still enjoyable 67.6°F (19.8°C). Weather in April »

Weather in May

May, the last month of the spring in Ione, is a warm month, with an average temperature varying between 49.5°F (9.7°C) and 75.4°F (24.1°C). Ione's transition into May sees a mild rise in the average high-temperature, edging from a comfortable 67.6°F (19.8°C) in April to a warm 75.4°F (24.1°C). Weather in May »

Weather in June

The first month of the summer, June, is a hot month in Ione, California, with an average temperature ranging between max 86.2°F (30.1°C) and min 55.9°F (13.3°C). The beginning of June signals a rise in the average high-temperature, moving from a warm 75.4°F (24.1°C) in May to a hot 86.2°F (30.1°C). Weather in June »

Weather in July

July, like June, is another tropical summer month in Ione, California, with an average temperature varying between 59.5°F (15.3°C) and 92.8°F (33.8°C). In Ione, July is identified by the highest average temperatures, reaching a peak of 92.8°F (33.8°C) and a low of 59.5°F (15.3°C). July's average heat index is evaluated at a very hot 95°F (35°C). Weather in July »

Weather in August

August, the last month of the summer in Ione, is also a hot month, with an average temperature fluctuating between 91.9°F (33.3°C) and 59°F (15°C). The commencement of August notes an average high-temperature of a still tropical 91.9°F (33.3°C), exhibiting little difference from the previous month. Weather in August »

Weather in September

The first month of the autumn, September, is still a hot month in Ione, California, with temperature in the range of an average high of 86.9°F (30.5°C) and an average low of 57.9°F (14.4°C). Ione notes an average high-temperature of a still hot 86.9°F (30.5°C) in September, hardly diverging from August. Weather in September »

Weather in October

October, like September, in Ione, California, is another warm autumn month, with an average temperature ranging between min 52.3°F (11.3°C) and max 75°F (23.9°C). October ushers in a slight temperature change, with average high-temperatures reducing from September's tropical 86.9°F (30.5°C) to a moderately hot 75°F (23.9°C). Weather in October »

Weather in November

November, the last month of the autumn in Ione, is another refreshing month, with an average temperature fluctuating between 44.8°F (7.1°C) and 63°F (17.2°C). The commencement of November involves a temperature shift, with the average high-temperature dropping from a warm 75°F (23.9°C) in October to a refreshing 63°F (17.2°C). Weather in November »

Weather in December

The first month of the winter, December, is also a fresh month in Ione, California, with an average temperature ranging between min 38.8°F (3.8°C) and max 54°F (12.2°C). In Ione, the lowest temperatures are generally noted in December, averaging a high of 54°F (12.2°C) and a low of 38.8°F (3.8°C). Weather in December »

Frequently asked questions

How many days does it rain?

Throughout the year, there are 75.1 rainfall days, and 19.06" (484mm) of precipitation is accumulated.

When it does not snow?

January through November are months without snowfall.

How much does it snow?

In Ione, during the entire year, snow aggregates up to 0.04" (1mm).

When is the lowest UV index?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3.

What is the most humid month?

The most humid month is March, with an average relative humidity of 74%.

What is the rainiest month?

March is the month with the most rainfall. Rain falls for 13.8 days and accumulates 3.7" (94mm) of precipitation.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.

When are the longest days?

The month with the longest days is June, with an average of 14h and 48min of daylight.

What is the month with the highest UV index?

The months with the highest UV index are June and July, with an average maximum UV index of 7.

What is the hottest time of year?

In Ione, temperatures reach their average annual highs in July, measuring 92.8°F (33.8°C) and a minimum average of 59.5°F (15.3°C).

What is the least humid month?

The least humid month in Ione is July, with an average relative humidity of 40%.

What is the driest month?

July and August are months with the least rain when the rain falls for 1.4 days and typically aggregates up to 0.04" (1mm) of rain.

What month has the most sunshine?

July has the most sunshine of the year, with an average of 12.1h of sunshine.

What part of the year is the coldest?

In Ione, the lowest temperatures are generally noted in December, averaging a high of 54°F (12.2°C) and a low of 38.8°F (3.8°C).

When does it snow in Ione?

December is the only month when snow falls in Ione.

When does it snow the most in Ione?

The month with the most snowfall is December, when snow falls for 0.2 days and typically aggregates up to 0.04" (1mm) of snow.

What is the month with the shortest days?

With an average of 9h and 30min of daylight, December has the shortest days of the year.

What is the month with the least sunshine?

December has the least sunshine of the year, with an average of 6h of sunshine.

Average temperature
Ione, CA

Average temperature - Ione, CA

The warmest month (with the highest average high temperature) is July (92.8°F).
The month with the lowest average high temperature is December (54°F).

The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is December (38.8°F).

Average pressure
Ione, CA

Average pressure - Ione, CA

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed
Ione, CA

Average wind speed - Ione, CA

The windiest month (with the highest average wind speed) is February (5.6mph).
The calmest months (with the lowest average wind speed) are August and September (3.9mph).

Average rainfall
Ione, CA

Average rainfall - Ione, CA

The wettest month (with the highest rainfall) is March (3.7").
The driest months (with the least rainfall) are July and August (0.04").

Average rainfall days
Ione, CA

Average rainfall days - Ione, CA

The month with the highest number of rainy days is March (13.8 days).
The month with the least rainy days is August (1.2 days).

Average snowfall
Ione, CA

Average snowfall - Ione, CA

The month with the highest snowfall is December (0.04").
The months with the least snowfall are January, February, March, April, May, June, July, August, September, October and November (0").

Average snowfall days
Ione, CA

Average snowfall days - Ione, CA

The month with the highest number of snowfall days is December (0.2 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).

Average daylight / Average sunshine
Ione, CA

Average daylight / Average sunshine - Ione, CA

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).

Average sunshine days
Ione, CA

Average sunshine days - Ione, CA

The months with the most sunshine days are July and August (28.8 days).
The month with the least sunshine days is March (16.3 days).

Average UV index
Ione, CA

Average UV index - Ione, CA

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).

Average visibility
Ione, CA

Average visibility - Ione, CA

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Ione, California, USA

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